android运用检测更新代码
android应用检测更新代码
JAVA代码:
UpdateManager.java
- package com.iteye.update;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.net.HttpURLConnection;
- import java.net.MalformedURLException;
- import java.net.URL;
- import java.util.HashMap;
- import android.app.AlertDialog;
- import android.app.AlertDialog.Builder;
- import android.app.Dialog;
- import android.content.Context;
- import android.content.DialogInterface;
- import android.content.DialogInterface.OnClickListener;
- import android.content.Intent;
- import android.content.pm.PackageManager.NameNotFoundException;
- import android.net.Uri;
- import android.os.Environment;
- import android.os.Handler;
- import android.os.Message;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.widget.ProgressBar;
- import android.widget.Toast;
- import com.iteye.androidtoast.R;
- public class UpdateManager
- {
- /* 下载中 */
- private static final int DOWNLOAD = 1;
- /* 下载结束 */
- private static final int DOWNLOAD_FINISH = 2;
- /* 保存解析的XML信息 */
- HashMap<String, String> mHashMap;
- /* 下载保存路径 */
- private String mSavePath;
- /* 记录进度条数量 */
- private int progress;
- /* 是否取消更新 */
- private boolean cancelUpdate = false;
- private Context mContext;
- /* 更新进度条 */
- private ProgressBar mProgress;
- private Dialog mDownloadDialog;
- private Handler mHandler = new Handler()
- {
- public void handleMessage(Message msg)
- {
- switch (msg.what)
- {
- // 正在下载
- case DOWNLOAD:
- // 设置进度条位置
- mProgress.setProgress(progress);
- break;
- case DOWNLOAD_FINISH:
- // 安装文件
- installApk();
- break;
- default:
- break;
- }
- };
- };
- public UpdateManager(Context context)
- {
- this.mContext = context;
- }
- /**
- * 检测软件更新
- */
- public void checkUpdate()
- {
- if (isUpdate())
- {
- // 显示提示对话框
- showNoticeDialog();
- } else
- {
- Toast.makeText(mContext, R.string.soft_update_no, Toast.LENGTH_LONG).show();
- }
- }
- /**
- * 检查软件是否有更新版本
- *
- * @return
- */
- private boolean isUpdate()
- {
- // 获取当前软件版本
- int versionCode = getVersionCode(mContext);
- // 把version.xml放到网络上,然后获取文件信息
- //InputStream inStream = ParseXmlService.class.getClassLoader().getResourceAsStream("version.xml");
- // 解析XML文件。 由于XML文件比较小,因此使用DOM方式进行解析
- ParseXmlService service = new ParseXmlService();
- try
- {
- String path = "http://192.168.1.146:8080/picweb/xml/version.xml";
- URL url = new URL(path);
- HttpURLConnection conn = (HttpURLConnection)url.openConnection();
- conn.setReadTimeout(5*1000);
- conn.setRequestMethod("GET");
- InputStream inStream = conn.getInputStream();
- mHashMap = service.parseXml(inStream);
- } catch (Exception e)
- {
- e.printStackTrace();
- }
- if (null != mHashMap)
- {
- int serviceCode = Integer.valueOf(mHashMap.get("version"));
- // 版本判断
- if (serviceCode > versionCode)
- {
- return true;
- }
- }
- return false;
- }
- /**
- * 获取软件版本号
- *
- * @param context
- * @return
- */
- private int getVersionCode(Context context)
- {
- int versionCode = 0;
- try
- {
- // 获取软件版本号,对应AndroidManifest.xml下android:versionCode
- versionCode = context.getPackageManager().getPackageInfo("com.iteye.androidtoast", 0).versionCode;
- } catch (NameNotFoundException e)
- {
- e.printStackTrace();
- }
- return versionCode;
- }
- /**
- * 显示软件更新对话框
- */
- private void showNoticeDialog()
- {
- // 构造对话框
- AlertDialog.Builder builder = new Builder(mContext);
- builder.setTitle(R.string.soft_update_title);
- builder.setMessage(R.string.soft_update_info);
- // 更新
- builder.setPositiveButton(R.string.soft_update_updatebtn, new OnClickListener()
- {
- @Override
- public void onClick(DialogInterface dialog, int which)
- {
- dialog.dismiss();
- // 显示下载对话框
- showDownloadDialog();
- }
- });
- // 稍后更新
- builder.setNegativeButton(R.string.soft_update_later, new OnClickListener()
- {
- @Override
- public void onClick(DialogInterface dialog, int which)
- {
- dialog.dismiss();
- }
- });
- Dialog noticeDialog = builder.create();
- noticeDialog.show();
- }
- /**
- * 显示软件下载对话框
- */
- private void showDownloadDialog()
- {
- // 构造软件下载对话框
- AlertDialog.Builder builder = new Builder(mContext);
- builder.setTitle(R.string.soft_updating);
- // 给下载对话框增加进度条
- final LayoutInflater inflater = LayoutInflater.from(mContext);
- View v = inflater.inflate(R.layout.softupdate_progress, null);
- mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
- builder.setView(v);
- // 取消更新
- builder.setNegativeButton(R.string.soft_update_cancel, new OnClickListener()
- {
- @Override
- public void onClick(DialogInterface dialog, int which)
- {
- dialog.dismiss();
- // 设置取消状态
- cancelUpdate = true;
- }
- });
- mDownloadDialog = builder.create();
- mDownloadDialog.show();
- // 现在文件
- downloadApk();
- }
- /**
- * 下载apk文件
- */
- private void downloadApk()
- {
- // 启动新线程下载软件
- new downloadApkThread().start();
- }
- /**
- * 下载文件线程
- */
- private class downloadApkThread extends Thread
- {
- @Override
- public void run()
- {
- try
- {
- // 判断SD卡是否存在,并且是否具有读写权限
- if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
- {
- // 获得存储卡的路径
- String sdpath = Environment.getExternalStorageDirectory() + "/";
- mSavePath = sdpath + "download";
- URL url = new URL(mHashMap.get("url"));
- // 创建连接
- HttpURLConnection conn = (HttpURLConnection) url.openConnection();
- conn.connect();
- // 获取文件大小
- int length = conn.getContentLength();
- // 创建输入流
- InputStream is = conn.getInputStream();
- File file = new File(mSavePath);
- // 判断文件目录是否存在
- if (!file.exists())
- {
- file.mkdir();
- }
- File apkFile = new File(mSavePath, mHashMap.get("name"));
- FileOutputStream fos = new FileOutputStream(apkFile);
- int count = 0;
- // 缓存
- byte buf[] = new byte[1024];
- // 写入到文件中
- do
- {
- int numread = is.read(buf);
- count += numread;
- // 计算进度条位置
- progress = (int) (((float) count / length) * 100);
- // 更新进度
- mHandler.sendEmptyMessage(DOWNLOAD);
- if (numread <= 0)
- {
- // 下载完成
- mHandler.sendEmptyMessage(DOWNLOAD_FINISH);
- break;
- }
- // 写入文件
- fos.write(buf, 0, numread);
- } while (!cancelUpdate);// 点击取消就停止下载.
- fos.close();
- is.close();
- }
- } catch (MalformedURLException e)
- {
- e.printStackTrace();
- } catch (IOException e)
- {
- e.printStackTrace();
- }
- // 取消下载对话框显示
- mDownloadDialog.dismiss();
- }
- };
- /**
- * 安装APK文件
- */
- private void installApk()
- {
- File apkfile = new File(mSavePath, mHashMap.get("name"));
- if (!apkfile.exists())
- {
- return;
- }
- // 通过Intent安装APK文件
- Intent i = new Intent(Intent.ACTION_VIEW);
- i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive");
- mContext.startActivity(i);
- }
- }
ParseXmlService.java
- package com.iteye.update;
- import java.io.InputStream;
- import java.util.HashMap;
- import javax.xml.parsers.DocumentBuilder;
- import javax.xml.parsers.DocumentBuilderFactory;
- import org.w3c.dom.Document;
- import org.w3c.dom.Element;
- import org.w3c.dom.Node;
- import org.w3c.dom.NodeList;
- public class ParseXmlService
- {
- public HashMap<String, String> parseXml(InputStream inStream) throws Exception
- {
- HashMap<String, String> hashMap = new HashMap<String, String>();
- // 实例化一个文档构建器工厂
- DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
- // 通过文档构建器工厂获取一个文档构建器
- DocumentBuilder builder = factory.newDocumentBuilder();
- // 通过文档通过文档构建器构建一个文档实例
- Document document = builder.parse(inStream);
- //获取XML文件根节点
- Element root = document.getDocumentElement();
- //获得所有子节点
- NodeList childNodes = root.getChildNodes();
- for (int j = 0; j < childNodes.getLength(); j++)
- {
- //遍历子节点
- Node childNode = (Node) childNodes.item(j);
- if (childNode.getNodeType() == Node.ELEMENT_NODE)
- {
- Element childElement = (Element) childNode;
- //版本号
- if ("version".equals(childElement.getNodeName()))
- {
- hashMap.put("version",childElement.getFirstChild().getNodeValue());
- }
- //软件名称
- else if (("name".equals(childElement.getNodeName())))
- {
- hashMap.put("name",childElement.getFirstChild().getNodeValue());
- }
- //下载地址
- else if (("url".equals(childElement.getNodeName())))
- {
- hashMap.put("url",childElement.getFirstChild().getNodeValue());
- }
- }
- }
- return hashMap;
- }
- }
version.xml
- <?xml version="1.0" encoding="UTF-8"?>
- <update>
- <version>1</version>
- <name>baidu_xinwen_1.1.0</name>
- <url>http://gdown.baidu.com/data/wisegame/f98d235e39e29031/baiduxinwen.apk</url>
- </update>
测试代码:
- UpdateManager manager = new UpdateManager(MainTwoActivity.this);
- // 检查软件更新
- manager.checkUpdate();
注:只需要把version.xml放到网上服务器去,更新版本时,到服务器把版本号和url修改一下就可以。